l82 



NEW YORK STATE MUSEUM 



fifth with a length twice its diameter, the terminal segment slightly 

 reduced, narrowly oval. Palpi; first segment short, stout, irregu- 

 larly subquadrate, the second roundly rectangular, the third one- 

 half longer, rather stout, the fourth longer than the third, some- 

 what dilated. Mesonotum shining dark brown, the submedian lines 

 thickly haired. Scutellum and postscutellum pale or fuscous orange. 

 Abdomen dark brown, the incisures deep orange. Wings hyaline, 

 costa dark brown. Halteres pale orange. Coxae and base of 

 femora yellowish straw, the distal portion of femora and tibiae 

 fuscous yellowish, the tarsi dark brown; claws rather slender, 

 strongly curved, the pulvilli as long as the claws. Ovipositor one- 

 half longer than the body; terminal lobe slender, with a length 

 three times its width, narrowly rounded. Type Cecid. a 1693a. 



Dasyneura lysimachiae Beutm. 



1907 Beutenmueller, William. Can. Ent., 39:305-6 (Cecidomyia) 



1908 Felt, E. P. N. Y. State Mus. Bui. 124, p. 349, 350 



This species was reared in August 1906 from a terminal conic 

 leaf gall on the whorled loosestrife, Lysimachia quadri- 

 folia, taken at Albany, N. Y. A similar gall, possibly that of this 

 species, was found on L. terrestris August 9, 1912, at Elm 

 Lake in the Adirondacks. Eupelmus dryorhizoxeni 

 Ashm. was reared from an axillary bud gall possibly produced by 

 the same midge. 



Gall. This is a conical enlargement of the terminal bud (pi. 9, 

 fig. 2) and contains a number of yellowish larvae. 



Male. Length 2.5 mm. Antennae one-quarter longer than the 

 body, thickly clothed with long hairs, brown; 16 segments, the fifth 

 with a stem one-quarter longer than the basal enlargement ; term- 

 inal segment slightly produced, narrowly oval. Palpi ; the first seg- 

 ment long, subtriangular, swollen distally, the second as long as the 

 first, narrowly oval, the third one-half longer than the second, mor 

 slender, the fourth about as long as the third. Genitalia ; basal 

 clasp segment long, stout; terminal clasp segment short, stout 

 greatly swollen near the middle ; dorsal plate long, broad, deeply 

 and triangularly incised ; ventral plate long, broad, broadly and 

 roundly emarginate. Harpes short, stout, tapering to a heavy, 

 chitinous spur about one-quarter the length of the organ. Other 

 characters nearly as in the female. 



Female. Length i mm. Antennae extending to the third ab- 

 dominal segment, sparsely haired, brown; 17 segments, the fifth 

 subsessile, cylindric, with a length nearly thrice its diameter ; term- 

 inal segment produced, tapering, narrowly rounded apically. Palpi ; 

 the first segment stout, expanded distally, the second narrowly oval, 

 as long as the first, the third more slender, twice the length of the 



